Seagate confirms 3TB drive, this year

3.5-in Constellation ES drive will initially be aimed at data center applications

Seagate confirmed on Monday that it does plan to ship a 3TB, 3.5-in Constellation ES hard disk drive this year, but cautioned that it will only be useable with PC and server makers who have upgraded their products to handle drives with capacities of more than 2.1TB.

The 3TB drive is the next generation of Seagate's Barracuda XT , which currently comes in capacities of up to 2TB and has a 6Gbit/sec. throughput and serial-attached SCSI (SAS) interface.

The 2.1TB ceiling was set about 30 years ago when a decision was made to limit the logical block address (LBA) range on a hard drive. The LBA specifies where blocks of data are stored on a hard drive.

Seagate senior product manager Barbara Craig told Computerworld today that the new 3TB drive will initially be aimed squarely at the enterprise space, "which is always hungry for more capacity."

However, she said that a 2.5-in version is in the works. But Seagate declined to say when that drive, suitable for a laptop, would be shipping.

A 2.5-in drive could also be used in data centers to further reduce floor space requirements. Before that happens, equipment manufactures much make adjustments in order to read new 32 byte LBAs, Craig wrote in a blog post last week .

Rumors of Seagate's 3TB drive originally surfaced several weeks ago in a blog on U.K.-based tech pub, The Register . Craig then spoke with Thinq.com earlier today, confirming that the drive was coming down the pipe.

The decision was made by the industry in the early 1980s the to limit the LBA range to 16 bytes per drive sector because "they never thought we'd go beyond a 2.1TB drive," Craig said.

Software and hardware manufacturers now need to adjust everything from the operating system to the basic input/output system (BIOS) to be able to read larger 32-byte LBAs, Craig said.

Without the larger LBA, current operating systems, such as Windows XP, would only be able to access as little as one-third of the space of the new 3TB drive.

"It's a big deal," Craig said. "Everybody has to be able to access these longer addresses with their products."

There has already been a lot of work done to date to address the LBA limitation, including the creation of a Universal Extensible Firmware Interface (UEFI), which defines how software interfaces with an operating system and the hardware on which it is running on.

Updates to standard hard disk drivers are currently being tested by Seagate and Intel , according to the hard drive maker.

The expanded LBA is also a non-issue for 64-bit operating systems such as Windows 7 and Vista versions, which can already read the longer addresses, she said.

Lucas Mearian covers storage, disaster recovery and business continuity, financial services infrastructure and health care IT for Computerworld . Follow Lucas on Twitter at @lucasmearian or subscribe to Lucas's RSS feed . His e-mail address is lmearian@computerworld.com .

Read more about storage hardware in Computerworld's Storage Hardware Knowledge Center.

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Lucas Mearian

Computerworld (US)
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?